JPH05575U - Brake hose protector - Google Patents

Abstract

(57) [Summary] [Purpose] A brake hose protector with excellent durability that does not easily break even if it interferes with other parts. [Structure] A sponge layer 4 covering an outer periphery of a brake hose 2 around which a harness cord is wound, and a skin layer 5 having a low friction coefficient formed on an outer surface of the sponge layer 4. The friction coefficient of the surface is reduced and the wear life of the protector is improved, so it is not easily damaged even if it interferes with other parts, and it is a protector for brake hose that is both soft and light and has sufficient durability.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a protector for an automobile brake hose.

[0002]

[Prior Art]

 Conventionally, only a brake hose was connected between the wheel and chassis of an automobile, but since a rotation sensor is now attached to the wheel side, a chassis and a wheel are provided as a harness separately from the brake hose. The need to connect has arisen.

However, if the wheel and the chassis are connected while the harness is exposed, the mud may bounce off or stones may hit and damage the vehicle. Therefore, it was proposed to devise a sensor harness disclosed in Japanese Utility Model Laid-Open No. 1-109405, in which a harness covering portion integrally formed with a covering rubber of a brake hose connecting a chassis side of a vehicle wheel to a wheel is formed. It houses the sensor harness body and has terminals at both ends of the harness body.

[Problems to be Solved by the Invention]

In the conventional method of integrally molding the harness covering portion with the covering rubber of the brake hose and housing the sensor harness main body inside, since the harness covering portion is made of solid rubber, the harness covering portion is housed inside thereof. There is no slack in the harness, and the movement of the harness cannot sufficiently follow the tire bounds.

Therefore, in order to reduce the rigidity of the harness covering portion, improve the followability of the harness, and reduce the weight of the brake hose, it is preferable that the protector is made of sponge. However, when the protector is made of sponge, when the brake hose interferes with other parts, the protector has a problem because it has a high friction coefficient and poor wear resistance.

The present invention has been made to solve the above-mentioned problems of the conventional protector for a brake hose, which has excellent wear resistance and durability even when it interferes with other parts. The purpose is to provide a protector.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned object, when the protector for the brake hose is made of sponge, the cause of poor durability was examined. As a result, we found that the cause is that the surface friction coefficient of sponge rubber is high. Therefore, the present invention was completed based on the idea of forming a skin layer having a low friction coefficient on the surface of the sponge layer.

The protector for a brake hose of the present invention comprises a sponge layer that covers the outer circumference of the brake hose around which the harness cord is wound, and a low-friction coefficient skin layer formed on the outer surface of the sponge layer. And

The thickness of the sponge layer that covers the outer periphery of the brake hose may be a thickness that is sufficient to protect the movement of the brake hose from interference with other components without restraining the movement of the brake hose, and is, for example, about 2 to 4 mm. It's enough.

The material of the skin layer formed on the outer surface of the sponge layer is a material having a small friction coefficient, and for example, urethane or silicone can be used. The thickness of the skin layer may be such that it gives sufficient durability to the protector, and is preferably about 0.5 to 1.0 mm. This is because if the skin layer is less than 0.5 mm, the protector cannot have sufficient durability, and if it exceeds 1.0 mm, the rigidity of the protector is increased and the movement of the brake hose is restricted.

[0011]

[Action]

 If the sponge layer alone interferes with other parts, it will be damaged by wear and the function of integrating the brake hose and harness cannot be maintained, but since a skin layer with a low friction coefficient is formed on the outer surface of the sponge layer, the friction coefficient of the surface Lowers the wear life of the protector. Therefore, it is a brake hose protector that satisfies both durability and softness.

[0012]

【Example】

 A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a side view of the brake hose covered with a protector. The harness cord 1 is wound around the brake hose 2, and the protector 3 is put on the harness cord 1.

As an embodiment of the present invention, the outer circumference of a brake hose 2 having an outer diameter of 10 mm wound with a harness cord 1 having a thickness of 1.0 mm is covered with a sponge layer 4 having a thickness of 3 mm as shown in the sectional view of FIG. Coated. Subsequently, a skin layer 5 made of urethane having a thickness of 0.8 mm was formed on the sponge layer 4.

On the other hand, as a comparative example, the outer circumference of the brake hose 2 having an outer diameter of 10 mm, which is also wound with the harness cord 1 having a thickness of 1.0 mm, is sponge having a thickness of 3 mm as shown in the sectional view of FIG. The coating with only layer 4 was prepared separately.

When the friction coefficient of the protector surface of the example of the present invention in which the skin layer was formed on the sponge layer and the comparative example having only the sponge layer was examined, the friction coefficient of the surface of the example was extremely high. It is small, and it was confirmed that the embodiment of the present invention has sufficient durability even if it interferes with other parts.

[0016]

[Effect of the device]

 As described above, the protector for a brake hose of the present invention comprises a sponge layer covering the outer circumference of the brake hose around which the harness cord is wound, and a skin layer having a low friction coefficient formed on the outer surface of the sponge layer. The feature is that the friction coefficient of the surface is reduced and the wear life of the protector is improved, so it does not easily break even if it interferes with other parts, and it satisfies the durability as well as the softness and lightness. It is a protector for the brake hose.

[Brief description of drawings]

FIG. 1 is a side view of a brake hose covered with a protector.

FIG. 2 is a sectional view of a protector including only a sponge layer.

FIG. 3 is a sectional view of a protector according to an embodiment of the present invention.

[Explanation of symbols]

1 harness cord 2 brake hose 3 protector 4 sponge layer 5 skin layer

Claims (1)

Claims for utility model registration 1. A sponge layer covering the outer circumference of a brake hose around which a harness cord is wound, and a skin layer having a low friction coefficient formed on the outer surface of the sponge layer. Brake hose protector.